What speedo gear?
Thread Starter
Pro
Joined: Nov 2004
Posts: 575
Likes: 0
From: Nice Lake Ontario
What speedo gear?
I know it's been talked about before but my search can't find it 
I just swapped rear gears from 4.10s to 3.36s & of course my speedo now reads about 10 mph slow! Somebody must know what speed gear is needed in this 69 M-21 tranny to make it right? Please
An gear ratio help or part #s help would be greatly appreciated
I just swapped rear gears from 4.10s to 3.36s & of course my speedo now reads about 10 mph slow! Somebody must know what speed gear is needed in this 69 M-21 tranny to make it right? Please
An gear ratio help or part #s help would be greatly appreciated
Melting Slicks
Joined: Apr 2004
Posts: 2,083
Likes: 2
From: Montreal Qc.
lots of info here
http://www.transmissioncenter.net/sp...n_______va.htm
for parts you just go to the dealer and tell him what color gear you need.
http://www.transmissioncenter.net/sp...n_______va.htm
for parts you just go to the dealer and tell him what color gear you need.
Last edited by Star79; Sep 5, 2005 at 09:57 AM.
Drifting
Joined: May 2004
Posts: 1,442
Likes: 2
From: Flanders NJ
Need to know how many teeth are on the existing output gear of trans.The color will tell you how many teeth are on it (need to look it up) divide that by 4.10 then mutiply the answer by 3.36 and thats the output gear you need. If its not available then you need to change both speedo gears in the trans.
Race Director
Joined: Sep 2002
Posts: 10,362
Likes: 5
From: San Diego - Deep Within The State of CONFUSION!
Originally Posted by sxr6
I know it's been talked about before but my search can't find it
I just swapped rear gears from 4.10s to 3.36s & of course my speedo now reads about 10 mph slow! Somebody must know what speed gear is needed in this 69 M-21 tranny to make it right? Please
An gear ratio help or part #s help would be greatly appreciated
I just swapped rear gears from 4.10s to 3.36s & of course my speedo now reads about 10 mph slow! Somebody must know what speed gear is needed in this 69 M-21 tranny to make it right? Please
An gear ratio help or part #s help would be greatly appreciated
Melting Slicks
Joined: Feb 2001
Posts: 3,330
Likes: 13
From: Europe , Luxembourg
Hi
Sorry for hijacking.
Why do the different teeth gears also have different outside diameters ?
If I use the red one, it works fine, but indicated wrong. If I use the clear one, it breaks after few miles as it's gear diameter is much bigger.
What's the trick. Günther
Sorry for hijacking.
Why do the different teeth gears also have different outside diameters ?
If I use the red one, it works fine, but indicated wrong. If I use the clear one, it breaks after few miles as it's gear diameter is much bigger.
What's the trick. Günther
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